In 2004 an environmental conservation, "soldier-pile" design was implemented in ancient Sant Pere de Premià in actual building. Uphill and next to a set of high-density, coastal tourist resorts, the site is located in the Mediterranean Pyrenees, border region of Catalonia. For the rehabilitation of a natural and archaeological site, timber and lumber systems were used. By reviving a traditional, soldier-pile and lagging walls technique, earth retention walls worked to repair damage caused by the rapid urbanization of the 1960s. For the inspection and monitoring, soldier-pile structures facilitate supervision tasks of overseers in heritage sites.